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Forums > C64 Coding > C64/C128 BASIC "if string" bug
2010-12-28 11:32
Kabuto
Account closed

Registered: Sep 2004
Posts: 58
C64/C128 BASIC "if string" bug

Interestingly, when doing a test like IF A$ THEN (instead of IF A$ <> "" THEN) the last numeric expression's result is used instead for determining whether to execute the code following THEN. So:

I=0:IF A$ THEN ?"1"

does not print 1 but

I=1:IF A$ THEN ?"1"

does. No matter what value is inside A$.
2010-12-28 12:07
tlr

Registered: Sep 2003
Posts: 1723
Cool bug! :)
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